1994 wave raider random shut off issue

Hey everyone, i have a 1994 yamaha wave raider 700 runs perfect for about a hour, then shuts off while riding and wont start, turns over but wont start, if i come back to the jet ski 2 days later from sitting it will start, any ideas? much appreciated, thanks.
new battery , new plugs, just a headache.

Is it always 2 days? Have you tried letting it sit for just a few minutes? May be a bad gas tank check valve. Pulling a suction on the tank. When it acts up again open the gas cap and see if it will start.

I once had a problem with a bad coil on a car engine. The engine would run when everything was cold. When the coil later became hot, it would then expand from the heat and the coil windings would "open" losing electrical continuity then failing. Damnest thing, when it was cold again, it would start again.

99.99% of the time it is the start/stop switch as previously mentioned. Between myself and friends we have five older Yamaha skis and all but one has had the identical problem. Chased lots of different routes, swapped parts, tested and retested until we finally dove into the switch.